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package com.sun.enterprise.util.cluster.windows.io;

import com.sun.enterprise.util.cluster.windows.SharedStrings;
import com.sun.enterprise.util.cluster.windows.process.WindowsCredentials;
import com.sun.enterprise.util.cluster.windows.process.WindowsException;
import java.net.*;
import jcifs.smb.NtlmPasswordAuthentication;

/**
 * Wrap the implementation details for the way we get access to remote
 * Windows files.
 * Note: null args == NPE
 * @author Byron Nevins
 */
public class WindowsRemoteFileSystem {
    private final String host;
    private final NtlmPasswordAuthentication authorization;

    public WindowsRemoteFileSystem(WindowsCredentials cr) throws WindowsException {
        // if host and domain are the same we can use the IP address of the host
        // otherwise use the domain name.
        boolean useDomain;
        String hostName = cr.getHost();
        String domain = cr.getDomain();

        if (!domain.equals(hostName))
            useDomain = true;
        else
            useDomain = false;

        host = getIP(hostName);

        try {
            if (useDomain)
                authorization = new NtlmPasswordAuthentication(domain, cr.getUser(), cr.getPassword());
            else
                authorization = new NtlmPasswordAuthentication(host, cr.getUser(), cr.getPassword());
        }
        catch (NoClassDefFoundError err) {
            throw new WindowsException(SharedStrings.get("missing_jinterop"));
        }
    }

    public WindowsRemoteFileSystem(String hostname, NtlmPasswordAuthentication auth) throws WindowsException {
        host = getIP(hostname);
        authorization = auth;

        if (auth == null)
            throw new WindowsException(SharedStrings.get("missing_jinterop"));
    }

    public WindowsRemoteFileSystem(String hostname, String username, String password) throws WindowsException {
        host = getIP(hostname);
        try {
            authorization = new NtlmPasswordAuthentication(host, username, password);
        }
        catch (NoClassDefFoundError err) {
            throw new WindowsException(SharedStrings.get("missing_jinterop"));
        }
    }

    /**
     * @return the host
     */
    public String getHost() {
        return host;
    }

    /**
     * @return the authorization
     */
    public NtlmPasswordAuthentication getAuthorization() {
        return authorization;
    }

    private String getIP(String hostname) {
        try {
            return InetAddress.getByName(hostname).getHostAddress();
        }
        catch (Exception e) {
            return hostname;
        }
    }
}
